Structural and magnetic analysis of nanocrystalline lead europium sulfide (PbxEuyS)

► Successful synthesis of nanocrystalline lead europium chalcogenides, a potentially technologically significant dilute magnetic semiconductor. ► Evidence of control over the phase separation of PbS and EuS materials, yielding a stable ternary alloy with europium content up to fifteen percent. ► Fac...

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Bibliographic Details
Published in:Materials chemistry and physics 2012-05, Vol.134 (1), p.1-6
Main Authors: Somarajan, Suseela, Harrison, Melissa A., Koktysh, Dmitry S., He, Weidong, Hasan, Saad A., Park, Ju-Hyun, Stillwell, Ryan L., Payzant, Edward A., Dickerson, James H.
Format: Article
Language:English
Subjects:
ALLOYS
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Dilute magnetic semiconductor
EUROPIUM
EUROPIUM SULFIDES
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
MAGNETIC SEMICONDUCTORS
MAGNETIZATION
MATERIALS SCIENCE
Nanocrystals
Paramagnetic
Rare earth
SYNTHESIS
Thermolysis
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY
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Summary:► Successful synthesis of nanocrystalline lead europium chalcogenides, a potentially technologically significant dilute magnetic semiconductor. ► Evidence of control over the phase separation of PbS and EuS materials, yielding a stable ternary alloy with europium content up to fifteen percent. ► Facile tunability of the magnetic properties of these ternary nanocrystals as a function of europium content. We report the synthesis and characterization of nanocrystalline PbxEuyS, a potentially important dilute magnetic semiconductor. The thermolysis of mixed precursors was adapted for the formation of homogeneous alloyed nanocrystals. Energy dispersive spectroscopy provided the atomic composition for PbxEuyS nanocrystals, which we juxtaposed with the ratio of the precursors. X-ray diffraction and magnetization measurements of the nanocrystals provided evidence that no phase separation occurred for europium concentrations of up to y=0.15.
ISSN:0254-0584
1879-3312
DOI:10.1016/j.matchemphys.2012.02.023